Lieutenant Bram Korthais, a veteran of a losing war for independence, accepts a final mission: escort an ambitious expedition to recover ancient constructs said to lie hidden in caverns deep beneath a frozen continent. Onboard a stolen submersible, Bram and his company of soldiers descend into darkness, alongside the enigmatic Professor Ronus, whose fascination with forbidden magic hides a ruthless ambition, and Esmee, his beautiful and mysterious assistant and guide in the underground world.

They must face monstrous creatures, treacherous labyrinths, and the growing shadow of betrayal. The discovery of the Mask of Night, an artifact of unspeakable power, forces Bram to risk not just his life, but the fate of everyone he swore to protect, in order to keep it falling into evil hands.

The Uncharted Realms is a world of fantastic adventure and cosmic horror with a blend of black powder and ethereal technology. Citadel of Gold is the first volume in The Mask of Night trilogy by Richard Lee Byers, a veteran fantasy and horror writer.